package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.OrdersPageQueryDTO;
import com.sky.dto.OrdersPaymentDTO;
import com.sky.dto.OrdersSubmitDTO;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.websocket.WebSocketServer;
import com.sky.utils.JwtUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderVO;
import io.jsonwebtoken.Claims;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.servlet.http.HttpServletRequest;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 订单业务实现
 *
 * @Author itcast
 * @Create 2023/4/29
 **/
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private HttpServletRequest httpServletRequest;
    @Autowired
    private JwtProperties jwtProperties;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;



    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public Orders submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        // 数据的合法性检查(检查地址id、购物车)
        Long addressBookId = ordersSubmitDTO.getAddressBookId();
        if(addressBookId == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(ShoppingCart.builder()
                .userId(BaseContext.getCurrentId())
                .build());
        if(shoppingCartList == null || shoppingCartList.size() == 0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        AddressBook addressBook = addressBookMapper.getById(addressBookId);
        String authentication = httpServletRequest.getHeader("authentication");
        Claims claims = JwtUtil.parseJWT(jwtProperties.getUserSecretKey(), authentication);
        Long userId = Long.valueOf(claims.get(JwtClaimsConstant.USER_ID).toString());

        // 向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setNumber(System.currentTimeMillis() + "");
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setAddress(addressBook.getDetail());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setOrderTime(LocalDateTime.now());
        orders.setUserId(userId);
        orders.setUserName(addressBook.getConsignee());
        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList  =new ArrayList<>();

        for (ShoppingCart shoppingCart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(shoppingCart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }

        // 向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);

        // 清空购物车
        shoppingCartMapper.deleteByUserId(userId);

        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号：" + orders.getNumber());

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);


        return orders;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        String authentication = httpServletRequest.getHeader("authentication");
        Claims claims = JwtUtil.parseJWT(jwtProperties.getUserSecretKey(), authentication);
        Long userId = Long.valueOf(claims.get(JwtClaimsConstant.USER_ID).toString());
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
    }
    @Override
    @ApiOperation("查询历史订单（用户）")
    public PageResult selectPageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<OrderVO> page = orderMapper.select(ordersPageQueryDTO);
        List<OrderVO> list = page.getResult();
        for (int i = 0; i < list.size(); i++) {
            List<OrderDetail> orderDetailList = orderDetailMapper.queryById(list.get(i).getId());
            list.get(i).setOrderDetailList(orderDetailList);
        }
        return new PageResult(page.getTotal(), list);
    }

    @Override
    @ApiOperation("取消订单（用户）")
    public void cancellation(Integer id) {
        orderMapper.cancellation(Orders.builder().
                id(Long.valueOf(id))
                .status(Orders.CANCELLED)
                .cancelTime(LocalDateTime.now())
                .cancelReason("用户取消订单")
                .build());

    }

    @Override
    @ApiOperation("再来一单（用户）")
    public void comAgain(Integer id) {
        List<OrderDetail> orderDetailList = orderDetailMapper.queryById(Long.valueOf(id));
        String authentication = httpServletRequest.getHeader("authentication");
        Claims claims = JwtUtil.parseJWT(jwtProperties.getUserSecretKey(), authentication);
        Long userId = Long.valueOf(claims.get(JwtClaimsConstant.USER_ID).toString());
        for (int i = 0; i < orderDetailList.size(); i++) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetailList.get(i), shoppingCart);
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }

    }

    @Override
    @ApiOperation("订单详情")
    public OrderVO detail(Integer id) {
        // 获取订单
        OrderVO query = orderMapper.detail(Orders.builder().id(Long.valueOf(id)).build());
        // 获取订单详情
        query.setOrderDetailList(orderDetailMapper.queryById(query.getId()));
        return query;
    }

    /**
     * 客户催单
     */
    public void reminder(Long id) {
        Orders orders = orderMapper.getById(id);
        if(orders == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",orders.getId());
        map.put("content","订单号：" + orders.getNumber());

        String json = JSON.toJSONString(map);
        //向客户端推送消息
        webSocketServer.sendToAllClient(json);
    }
}
